CN2202987Y - Mineral explosion-insulating high-voltage vacuum switch - Google Patents
Mineral explosion-insulating high-voltage vacuum switch Download PDFInfo
- Publication number
- CN2202987Y CN2202987Y CN 94228749 CN94228749U CN2202987Y CN 2202987 Y CN2202987 Y CN 2202987Y CN 94228749 CN94228749 CN 94228749 CN 94228749 U CN94228749 U CN 94228749U CN 2202987 Y CN2202987 Y CN 2202987Y
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- voltage
- vacuum
- switch
- breaker
- casing
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses a mineral explosion-insulating high-voltage vacuum switch whose front face is provided with an ammeter, a voltmeter, a cable connector and a power cut button; the middle part of the mineral explosion-insulating high-voltage vacuum switch is provided with a handle; The internal structure of the mineral explosion-insulating high-voltage vacuum switch is that the cable connector is entered a box body and connected to an insulation stanchion porcelain vase, passes through a current mutual inductor and is connected to a vacuum breaker through an isolating switch; the contact points of the vacuum breaker are arranged in a vacuum chamber, the output terminal of the vacuum breaker is connected to an isolating plug, and the action of the division and closing switch of the vacuum breaker is controlled by an operating mechanism, a releaser and the handle. The output terminal of the vacuum breaker is provided with a voltage-sensitive resistor for limiting operation over-voltage; the front side of the vacuum breaker is provided with a voltage mutual inductor for monitoring the voltage and under-voltage protection. The utility model has the advantages of simple and reasonable structure, high safety and convenient operation, and the utility model can satisfy the requirement that the capacity of a mobile substation is enlarged.
Description
The utility model belongs to the supporting switch in high-pressure side, mobile substation under the coal mine.
Before the utility model is made, the supporting switch of China's coal-mine down-hole high pressure side is to adopt FB-6 type high voltage load switch, it is to be made of Flameproof box, isolating switch, operating mechanism and cable connector, be mainly used in and cut-off and the no-load current of closed mobile substation, there is following defective in this high voltage load switch:
1. function is incomplete, can not operate by on-load, when normally using, requires first cutoff low feeding switch load, divides under the no-load situation then, closes a floodgate.
2. poor stability, no switch protection function and function for monitoring, isolating switch all produces arc light when each divide-shut brake, and exist and light the danger that gas sets off an explosion, and the easy scaling loss of contact, be not easy to maintenance;
3. dynamic and thermal stability performance parameter is low, and the conversion short-circuit current capability can not satisfy the needs of large and medium-sized mine.
In order to overcome the above-mentioned shortcoming of existing FB-6 type high voltage load switch, the purpose of this utility model provides a kind of flame-proof mine high-pressure vacuum switch, and it has complete function, and is safe and reliable, easy and simple to handle, and can adapt to the needs that the mobile substation capacity strengthens.
The utility model is the improvement to existing FB-6 type high voltage load switch; except having the whole building blocks of FB-6 type switch; its cable connector 2 enters casing 3 and is connected on the insulation column 8; through current transformer 9; be connected to a vacuum circuit-breaker 11 by isolating switch 10; the contact that this vacuum opens circuit is in vacuum chamber; its output is connected on the stab contact 12; electric current is delivered to the input of transformer; the branch of vacuum circuit-breaker; feed motion is controlled by operating mechanism 15 and release 16 and is protected; power to dry-type transformer then; operating mechanism and release are connected with handle 7; be the restriction switching overvoltage, piezo-resistance 13 be housed, current transformer 9 is housed for the protection transformer produces overcurrent and load current detected at the output of vacuum circuit-breaker; be monitor voltage and under voltage protection; be connected to voltage transformer 14 in the front side of vaccum circuit device, be provided with ammeter in the casing front; voltmeter 1 is provided with observation window in the casing both sides.
The utility model has following advantage compared with the prior art:
1. improve and the expansion operating function, adopt vacuum circuit-breaker, change air arc blow-out power-down mode, this switch has concurrently cuts off the electricity supply and operating function, realizes local operation, improves useful life;
2. improve performance heat-stable current value and bring up to 10KA by 3.15KA, the dynamic current value is brought up to 25KA by 8KA;
3. the increase defencive function is equiped with overcurrent protection and less voltage protector, adopts piezo-resistance restriction switching overvoltage;
4. the increase function for monitoring is provided with ammeter, voltmeter, and establishes observation window in the casing both sides, and switch ruuning situation is monitored at any time;
5. amplify, rated capacity is 200A, satisfies the needs that the mobile substation capacity is brought up to 2000KVA;
6. do not produce arc light when cutting off load, its arc quenching method is vacuum extinction, thereby guarantees safe and reliablely, avoids lighting the serious accident that gas plays blast and takes place.
Description of drawings:
Fig. 1 is a flame-proof mine high-pressure vacuum switch casing front schematic view;
Fig. 2 is a flame-proof mine high-pressure vacuum switch internal structure layout plan;
Fig. 3 is a flame-proof mine high-pressure vacuum switch schematic circuit.
Number in the figure: 1. ammeter, voltmeter; 2. cable connector; 3. casing; 4. label; 5. power failure button; 6. button famous brand; 7. handle; 8. support insulator; 9. current transformer; 10. isolating switch; 11. vacuum circuit-breaker; 12. stab contact; 13. piezo-resistance; 14. voltage transformer; 15. operating mechanism; 16. release; 17. side handle; The YH-voltage transformer; The GK-high voltage isolator; The LH-current transformer; The GD-vacuum circuit-breaker; The Y-piezo-resistance.
Below in conjunction with accompanying drawing enforcement of the present utility model is described further:
In casing 3 fronts ammeter is housed with reference to Fig. 1; voltmeter 1; the casing both sides are provided with observation window; cable connector 2 enters in the casing 3; there is label 4 the casing top; power failure button 5; handle 7 is equipped with at the middle part; its inner critical piece (see figure 2) includes flameproof cabinet 3 cable connectors 2; handle 7; isolating switch 10; vacuum circuit-breaker 11; wherein cable connector 2 enters and is connected on the insulation column porcelain vase 8 in the casing 3; through current transformer 9; be connected on the vacuum circuit-breaker 11 by isolating switch 10; the contact of vacuum circuit-breaker is in vacuum chamber; the output of vacuum circuit-breaker is connected on the stab contact 12; electric current is delivered to the input of transformer, operating mechanism 15; release 16 is connected with handle 7, is used to control the branch of vacuum circuit-breaker; feed motion is also implemented protection.The output of vacuum circuit-breaker is connected to piezo-resistance 13, detects for protection transformer generation overcurrent and to load current and is provided with current transformer 9, at the preceding side joint voltage transformer 14 of vacuum circuit-breaker.Isolating switch 10 is the plug-in strip structure, and dynamic/static contact all is fixed on the support insulator insulator, and is connected with the three-phase conducting rod respectively, drives three-phase moving contact by side handle 17 and connecting rod and realizes dividing, closing a floodgate.Handle 7 by along counterclockwise rotating, is finished branch, feed motion by the operating mechanism 15 drive vacuum circuit-breakers 11 of spring for accumulating energy.When overvoltage occurring, utilize piezo-resistance 13 bypasses to eliminate voltage peak; When overcurrent occurring, utilize current transformer 9 to impel release 16 actions, by operating mechanism control vacuum circuit-breaker 11 separating brakes, reach the purpose of power-off protection; When under voltage occurring, utilize voltage transformer 14 to impel release 16 actions, by operating mechanism 15 control vacuum circuit-breakers 11 separating brakes.The line current that current transformer 9 is measured can show on ammeter, and the line voltage distribution that voltage transformer 14 is measured can show on voltmeter.
Claims (5)
1, the utility model belongs to the mine explosion-suppression high-pressure vacuum switch, in casing (3) front ammeter is housed, voltmeter (1), cable connector (2) enters in the casing (3), there is label (4) the casing top, power failure button (5), handle (7) is equipped with at the middle part, its internal part comprises Flameproof box (3), cable connector (2), handle (7), isolating switch (10) and vacuum circuit-breaker (11), it is characterized in that cable connector (2) enters is connected on the insulation column porcelain vase (8) in the casing (3), through current transformer (9), be connected on the vacuum circuit-breaker (11) by isolating switch (10), the output of vacuum circuit-breaker is connected on the stab contact (12), and operating mechanism (15) release (16) that is used to control the divide-shut brake action of vacuum circuit-breaker is connected with handle (7).
2, according to the described high-pressure vacuum switch of claim 1, the contact that it is characterized in that vacuum circuit-breaker (11) is in vacuum chamber.
3,, it is characterized in that being connected to piezo-resistance (13) at the output of vacuum circuit-breaker according to the described high-pressure vacuum switch of claim 1.
4,, it is characterized in that being connected to voltage transformer (14) in the front side of vacuum circuit-breaker according to the described high-pressure vacuum switch of claim 1.
5, according to the described high-pressure vacuum switch of claim 1, it is characterized in that being provided with ammeter, voltmeter (1) in the casing front, be provided with observation window in casing (3) both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228749 CN2202987Y (en) | 1994-05-31 | 1994-05-31 | Mineral explosion-insulating high-voltage vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228749 CN2202987Y (en) | 1994-05-31 | 1994-05-31 | Mineral explosion-insulating high-voltage vacuum switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2202987Y true CN2202987Y (en) | 1995-07-05 |
Family
ID=33841223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94228749 Expired - Fee Related CN2202987Y (en) | 1994-05-31 | 1994-05-31 | Mineral explosion-insulating high-voltage vacuum switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2202987Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487190A (en) * | 2010-12-01 | 2012-06-06 | 河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
-
1994
- 1994-05-31 CN CN 94228749 patent/CN2202987Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487190A (en) * | 2010-12-01 | 2012-06-06 | 河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
| CN102487190B (en) * | 2010-12-01 | 2016-08-17 | 国网河南省电力公司南阳供电公司 | High-voltage side protection device of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |